[Shop-talk] Wiring a Honywell WiFi Thermostat to a 2 wire system

[Pat Horne]

There should be 24V AC between the C & R terminals. A wire may have broken while relocating. 

You can check the white & red by shorting them together. If it works the problem is with the C wire. If not, it’s probably the R wire. 

Peace,
Pat

Pat Horne 
We support Habitat for Humanity


On Feb 2, 2021, at 9:26 AM, Rochlin Robert <rrochlin at comcast.net> wrote:

    I moved my Honeywell WiFi thermostat from the 1st floor where it controlled A/C, heat, and fan to the garage where it would only control heat. I wired a C wire and connected the red and white wires from the appropriate boiler zone to the WiFi thermostat but I does seem to be getting power. Aside from not having a fan or A/C wire the installation is the same.  I know the C wire is a good circuit because it is the same one that this thermostat used, and a new now functioning first floor thermostat uses. Any help appreciated.
   Best,
   Bob
_______________________________________________

Shop-talk at autox.team.net
Donate: http://www.team.net/donate.html
Suggested annual donation  $12.96
Archive: http://www.team.net/pipermail/shop-talk http://autox.team.net/archive

Unsubscribe/Manage: http://autox.team.net/mailman/options/shop-talk/patintexas@icloud.com